1 files changed, 43 insertions, 0 deletions
diff --git a/src/glsl/ir.cpp b/src/glsl/ir.cpp
index 768c4dcc707..1b4973612e0 100644
--- a/src/glsl/ir.cpp
+++ b/src/glsl/ir.cpp
@@ -1891,3 +1891,46 @@ vertices_per_prim(GLenum prim)
       return 3;
    }
 }
+
+/**
+ * Generate a string describing the mode of a variable
+ */
+const char *
+mode_string(const ir_variable *var)
+{
+   switch (var->mode) {
+   case ir_var_auto:
+      return (var->read_only) ? "global constant" : "global variable";
+
+   case ir_var_uniform:
+      return "uniform";
+
+   case ir_var_shader_in:
+      return "shader input";
+
+   case ir_var_shader_out:
+      return "shader output";
+
+   case ir_var_function_in:
+   case ir_var_const_in:
+      return "function input";
+
+   case ir_var_function_out:
+      return "function output";
+
+   case ir_var_function_inout:
+      return "function inout";
+
+   case ir_var_system_value:
+      return "shader input";
+
+   case ir_var_temporary:
+      return "compiler temporary";
+
+   case ir_var_mode_count:
+      break;
+   }
+
+   assert(!"Should not get here.");
+   return "invalid variable";
+}